— Was the problem solved at the meeting?

— Not yet. I'm afraid it may lead to more serious ones if _____ unsolved.[ ]

A. making

B. remained

C. left

D. taking

统计推断的主要内容为

A．统计描述与统计图表
B．参数估计和假设检验
C．区间估计和点估计
D．统计预测与统计控制
E．参数估计与统计预测